SCM1240M
High Voltage, High Current 3-Phase Motor Drivers
Features and Benefits
Description
▪ Each half-bridge circuit consists of a pre-driver circuit that
is completely independent from the others
▪ 10 to 30 A continuous output IPM in a small-footprint
package
▪ Protection against simultaneous high- and low-side turning on
▪ Bootstrap diodes with series resistors for suppressing
inrush current are incorporated
TheSCM1240Minverterpowermodule(IPM)devicesprovide
a robust, highly-integrated solution for optimally controlling
3-phase motor power inverter systems and variable speed
control systems used in energy-conserving designs to drive
motors of residential and commercial appliances. These ICs
take 85 to 253 VAC input voltage, and 10 to 30A(continuous)
output current. They can withstand voltages of up to 600 V
(IGBT breakdown voltage).
▪ CMOS compatible input (3.3 to 5 V)
▪ Designed to minimize simultaneous current through both
high- and low-side IGBTs by optimizing gate drive resistors
▪ Integrated Fast Recovery Diode (FRD) as freewheeling
diode for each IGBT
▪ UVLO protection with auto restart
▪ Thermal shutdown (TSD) with auto restart
The high current SCM1240M employs a new, small-footprint
proprietary DIP package. The IC itself consists of all of the
necessary power elements (six IGBTs), pre-drive ICs (three),
and freewheeling diodes (six), needed to configure the main
circuit of an inverter, as well as a bootstrap circuit (three
bootstrap diodes and three boot resistors) as a high-side drive
power supply. This enables the main circuit of the inverter to
be configured with fewer external components than traditional
designs.
¯¯¯
▪ Fault (FO indicator) signal output at protection activation:
UVLO (low side only), OCP, STP, and TSD
▪ Proprietary power DIP package
▪ UL Recognized Component (File No.: E118037)
Applicationsincluderesidentialwhitegoods(homeappliances)
and commercial appliance motor control, such as:
▪ Air conditioner compressor motor
▪ Air conditioner fan motor
Packages: Power DIP
Not to scale
▪ Refrigerator compressor motor
▪ Washing machine main motor
Fully molded
LF 2551
Heatsink pad
LF2552
Functional Block Diagram
One of three phases
VB
HS
SCM1240M
VBB
RB
BootDi
MIC
UV
Detect
UV
Detect
VCC
HIN
FRD
FRD
Drive
Circuit
Level
Shiꢀ
Input Logic
STP
U,V,W
LS
LIN
COM
FO
Drive
Circuit
O.C.
Protect
Thermal
Protect
OCP
Figure 1. Diagram of one of three phases in the device.
SCM1240MDS-Rev. 5
SANKEN ELECTRIC CO., LTD.
http://www.sanken-ele.co.jp/en/